We divide 303239 by 12
The aim is to understand the frequency of 12 in 303239.

Step 1:
12 can be fit into 3 0 times, resulting in a remainder of 3.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtracting 0 from 3 leaves us with 3.
Append the next digit (0) from the dividend to 3 and continue with: 30 / 12

Let's proceed to step 2:
12 goes into 30 2 times with a remainder of 6.
The next digit of our result is 2. 
Result so far: 2.0
If we subtract 24 from 30, we get 6.
Take the next digit (3) from the dividend and append it to 6, then repeat: 63 / 12

On to step 3:
The number 12 fits into 63 5 times, leaving a remainder of 3.
Put 5 as the next digit of the answer. 
Result so far: 25.0
If we subtract 60 from 63, we get 3.
Include the next digit (2) from the dividend after 3, then repeat: 32 / 12

Advancing to step 4:
When dividing 32 by 12, we get 2 with a remainder of 8.
Put 2 as the next digit of the answer. 
Result so far: 252.0
Deduct 24 from 32 and we're left with 8.
Bring next digit (3) of the dividend behind the 8 and repeat the process: 83 / 12

Moving on to step 5:
12 goes into 83 6 times with a remainder of 11.
The next digit of our result is 6. 
Result so far: 2526.0
If we take 72 away from 83, we end up with 11.
Fetch the next digit (9) from the dividend, attach it to 11 and continue: 119 / 12

Step 6:
119 divided by 12 is 9 with a remainder of 11.
Record the quotient 9 as the next digit in the result. 
Result so far: 25269.0
Subtract 108 from 119 to get 11.
Since there are no more digits in the dividend, we add a zero to the remainder making it 110, and continue the process.

Let's proceed to step 7:
The number 12 fits into 110 9 times, leaving a remainder of 2.
Put 9 as the next digit of the answer. 
Result so far: 25269.9
Deduct 108 from 110 and we're left with 2.
Since there are no more digits in the dividend, we add a zero to the remainder making it 20, and continue the process.

Moving on to step 8:
The number 12 fits into 20 1 times, leaving a remainder of 8.
The number 1 becomes the next digit in our result. 
Result so far: 25269.91
The remainder is 8 after subtracting 12 from 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

Moving on to step 9:
80 divided by 12 is 6 with a remainder of 8.
The next digit of our result is 6. 
Result so far: 25269.916
Subtract 72 from 80 to get 8.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

Moving on to step 10:
If we divide 80 by 12, we get 6 and a remainder of 8.
The number 6 becomes the next digit in our result. 
Result so far: 25269.9166
Deduct 72 from 80 and we're left with 8.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

Our division results in 25269.9166 with a remaining 8e-05.